Limestone Teatment

[ozfish]

I am passing iron rich ground water through a tank filled with limestone prior to aerating the ground water. The tank has a pump in it which is fouling every 14-20 days.
The limestone does the job without the need for chemical dosing - yet the method is not very good. Does anybody have any ideas or alternative methods of using limestone to increase the CaCo3 of the water.

Regards

 

[DeltaCascade]

Perhaps dose the water instead ... have a slipstream of raw water dilute water than has gone through the lime? Are you calculating LSI values of water before and after lime? LIS of +2 or more can be expected to cause scale, and LSI will rise with temperature, too (ie: in pump).
Hmmm.. Good luck